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If the initial concentration of h2o was 0.700M and after 54mins, the concentration is measured to be 0.0875M what is the half life
what is the best way to distinguish between levorotatory and dextrorotatory enantiomers if measured optical rotation is
A sample of Hydrogen gas was collected over water at 21 degrees C and at a pressure equal to the atmospheric pressure of 748 mmHg. The volume of the sample was 512 ml. How many grams of the H2 are in the sample. The vapor pressure of water at 21 d..
What is the empirical formula of compounds: ethyne (C2H2) and styrene (C8H8). Explain the relationship between ethyne and styrene's empirical formulas and their properties.
If a bottle of nail polish remover contains 172 of acetone,how much heat would be released by its complete combustion? The density of acetone is 0.788 .
what is the energy of light that is emittted by one iron atom during its decay from an excited state to a ground state
How would you prepare 1.000 L of a 1.000 mole L?1, pH 7.50 Tris-aka, tris(hydroxymethyl)aminomethane-buffer? You have pure Tris?HCl, {(HOCH2)3NH+,Cl?}
an aerosol spray can with a volume of 270 ml contains 3.2 g of propane gas propellant. what is the pressure in the can at 20 c.
Calculate the heat energy released when 10.3 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for Mercury at 1 atm: Heat capacity: 28.0 J/(mol*K) Melting Point: 234.32 K Enthalpy of fusion
Calculate the standard cell potential at 25 degrees celsius for the reaction X(s)+2Y+(aq) -> X^2+(aq)+2Y(s) where delta H = -733 kJ and delta S = -279 J/K Express your answer to three significant figures and include the appropriate units.
The pressures ranges between 0.2 bar and 60 bar. Determine the net work produced and the efficiency of the cycle?
Derive an expression for the compression factor of a gas that obeys the equation of state P(V - nb) = nRT
determine what would be its temperature after absorption of 9.4 10-2 kwh of heat if 1.45 l of water is initially at
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